61
Radijator Inženjering d.o.o, 36000 Kraljevo, Živojina Lazića - Solunca br.6, Srbija
tel. +381 36 399 140, fax. +381 36 399 150, http://www.radijator.rs
e-mail: [email protected]
- Data for which thermal effect the safety valve is set;
- The highest opening pressure 3 bars.
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It is obligatory to check the correct functioning at regular intervals as well as the re-
calibration by certified companies. These responsibilities are carried out in accordance
with the law of every country in which the boiler is assembled. Always keep the written
documentation of the last calibration data for the safety valve.
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On the return line assemble at least another pressure safety valve.
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Along with the pressure safety valve, the same security group includes vent valve. On
this unit there are two such valves. One is on the highest point of the boiler and the other
at the highest point of the collector at the point of branching pipe hot water and expansion
vessel.
Electro mechanical pressure switch for water (figure 5):
Figure 5. Electro mechanical pressure switch for water
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This security element continuously measures the pressure in the boiler heat exchanger of
the pellet Boiler and that information is transmitted to automation system. If the pressure
is above or below the value of 0.5 to 2.7 bar then it leads to shutting down of the whole
unit. Limit values of the minimum and maximum pressure values are determined by the
operation program of automation.
Pressure switch for flue gases (figure 6):
Figure 6. Pressure switch for flue gases
